Question

the sum of two rational numbers is -8 if one of them is5/9,find the other

Answer 1

Let two rational numbers are x, y
x=5/9
given
x+y =-8

5/9 +y = -8
y= -8 - 5/9

y = (-72 -5)/9
y= -77/9
therefore second number = y = -77/9